The Trump administration is gearing up for a fight to secure money for a border wall, more immigration enforcement officers and a bigger military, according to a Politico report citing White House and congressional officials.

But the fight could lead to a government shutdown next Friday, with almost uniform Democratic opposition to nearly all of the Trump administration’s spending proposals. Government spending expires Friday, right before the 100th day of Donald Trump’s presidency. Officials could also strike a one-week compromise, Politico writes, giving them more time for a broader agreement.

Also read: Trump to revive 1962 law to explore new barriers on steel imports.

New, higher estimate for border wall: The border wall could cost much more than initial estimates, according to a report from Democrats on the Senate Homeland Security Committee. As the Fiscal Times writes, the report’s estimate tops out at nearly $70 billion, far more than the $12 billion Trump promised during his campaign. But Democrats, as the report says, are opposed to the wall and have every reason to paint it as poor a light as possible.

Obamacare repeal vote? CNN reports the White House is exploring whether to take another stab at repealing and replacing Obamacare before President Trump hits his 100-day milestone late next week. Congress returns from recess next week, and the Trump administration is fielding questions about its accomplishments during its first 100 days in office. “I don’t think it’s impossible to think we’ll have a vote,” a senior administration official said. But the official cautioned some Republican House members are at odds over certain parts of a repeal bill. Politico has a summary of changes to the bill.

Support for border tax: A new Harvard-Harris poll finds 62% of Americans would support a 20% tax on all goods made outside the U.S. The Hill has more on the poll, an online survey of 2,027 registered voters taken April 14-17. A tax on imports is a key part of the reform plan from House Speaker Paul Ryan, a Wisconsin Republican.

In an interview with the Financial Times, Treasury Secretary Steven Mnuchin said the border tax idea is still on the table.